Head-gate.



Patented Apr. 4, 1911.

2 r v'yl WecZr'z 0/5.

P. L. HEDRIGK.

. HBADGATE. APPLICATION FILED JULY 18, 1910.

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PERRY L. HEDRICK. OF HOLTVILLE,-CALIFORNIA.

HEAD-GATE; v

Specification of Letters Patent.

"atented Apr. 4. 1911 Application tiled July 18, 1910. Serial Ila-572,623.

To all whom it may concern:

Be it knpwn that I. Penny-L. Hnnmcu, a citizen State of California, have invented certain new and useful Improvements in Head- Gates. of which the following is a specificatl()1l,,1'f191108 being had therein to the-ac companying drawing.

This invention relates to head gates used in outlets from irrigating canals.

The invention has for its object to provide after set forth and claimed.

Referring to the accompanying drawings:-I igure 1 is a view in perspective of r the end of a water pipe and a head-gate constructed in accordance with this invention with the sliding gate removed. end view of the device shown in Fig. '1 with the gate closed; Fig 3 is a plan view in horizontal section. Fig. 4 is a side viewin longitudinal section.

detail view of a portion ofthe gate. Figs.

6 and 7 are views in longitudinal section of,

a modified form of the gate. Fig. 8 is an end view thereof. Fig. 9is a viewin perspectlve of a portion of a pipe of a modified 1 form, into which the water. is conducted from one elevation to a lower elevation.

In, the form of the device shown in Fi s. 1

to inclusive, thegate structure has a dloping front or face. In the device shown in Figs. 6 to 8 inclusive, the gate structure-is vertical. I

In carrying out the invention, a pipe 1 is provided whichfisi formed with a beveled,

edge 2 at one end. 5

3 indicates .a collar which is formed of concrete, cast of a slightly convex form toward the front, theicollarfibeing formed with wings 4, which extend diagonally in'a i vertical direction and also diagonally-in a lateral direction so as to conform to the bank of thecanal or-irrigating ditch. The collar 3 is formed with a groove curved in cross section, so as to fit against the beveled the United States, residing. at -Holtville, in the county of Imperial'and' Fig. :2 is an.

Fig. 5 is an enlargededge of the pipe 1, thereby making a tight joint. The collaron its face is formed with flanges 5 and grooves back of said flanges and with a sharp annular corner or shoulder 7. which-serves to stay the power of the-water when it is admitted through the gate under pressure. flaringwingsof the gate fit the slope of the bank and guide-and check the water and let it-glide througlrand prevent the washing away of the bank behind the collar 3. The collar 3 is formed ab the rear of its opening with an annular groove 6 which connects with the beveled end.2 of the pipe 1. permitting the soft concrete to How in behind the door, which is located in the grooves (3 and thereby forms a 'tight'joint with a smooth glass like surface on all sides.

In forming the: ate structure, a sheet iron gate S'is providetl about which the concrete gate strnctureris molded. The gate 8 is preferably prepared before being placed in front of thepipo-l with a coating of liquid. so that the concrete will not stick to the gate. as it is being molded ab'outthc same. .\s theconcretebegins to stiffen up, due to the setting oncrystallization of the cement, the gate 8 is worked up and down and sidewise to form the grooves (3.-- In some instances a smooth. =gatei may be: obtained vwithout any preparation or coating, bysimply working it up and down at the proper time and then pulling it out.. This working of the gate has the effect of trowelingtheconcrete hehind the gate and brings the cement to the surface in contact 'withthe gateand makesa smooth surface against which the gate is held'by the water. pressure on the front. Owing to the convexform of the collar 3 it will be broughtdownward against-the gate and thereby held firmly against the collar at t-he top. Inorper to aid in'holding the gate firmly in position in;the grooves 6 the gate is-operated by a-suibable:handle,-as for example, the wooden handle Qsecured to the sa-me.- The lower corners of the gate are cut as at 10 and the lower ends of the flanges are cut as at 11. By meansof this construction all foreign matter in the grooves is perdown; In order to assist in holding the gate S-firmlyin place suitable springs are provid'ed preferably consisting of. curved springs 12, having; one end embedded in the flange 5 and the other curved endmovable in a slot 13 in the flange 5. A number of The sloping face and' mitted to escape when the-gate-8is closed such springs are provided for each groove 6 and press against the gate 8. The gate 8 is such a close and perfect fit in the slot 6, that the pressure of the water holds the gate firmly against the collar 3, making almost a water-tight joint. This joint is rendered tight within a short time by the deposit of silt of any silt ladened waters in the slots 6.

The construction shown'in Figs. 6 to 8 inclusive, is similar to thatshown in Figs. 1 to 5 inclusive except that the gate structure is vertical instead of inclined. The gate structure being cast in one piece with a collar 14, flanges 15, grooves 16, in which is a gate 1.7. having a handle '18. The structure is formed similar to that described in Figs. 1 to 5 inclusive, the lower ends of the gate 16 being cut away as at '19 and the flanges 15 being cut away as-at 20. -In the vdevice shown in Fig. 9 a portion of the pipe 21 is shown having an inclined ortion 22. This is for the purpose of utilizing the flow of water from a higher level to a lower one. v

It will be seen that by means of this-invention, a head gate is provided in which the gate structure is formed in one piece of concrete which is firmly united to'the end of the pipe to form a water tight joint and also serves to withstand the pressure of the water passing into the pipe. The gate structure, so constructed offers a water tight gate which may be easily operated and yet be held firmly in place.

Having described the invent-ion, I claim:

1. In a structure of the character described, a pipe, a head gate structure formed with vertical grooves and lateral flanges, said structure being formed in one piece of concrete, and a movable gate slidable in said grooves.

2. In a structure of the character described, a pipe having a beveled edge at one end, a head gate structure formed'of concrete, a collar having a groove at its rear portion surrounding said beveled end of said pipe, a filling of concrete in said groove, grooves in said collar, and a slidable metallic gate mounted in said grooves.

3. In a structure of the character described, a pipe, a head gate structure of concrete cemented to the end of said pipe and having grooves and lateral flanges, with an angular shoulder in each flange, and'a metallic gate movable in said grooves to close said pipe.

4. In a structure of the character described, a pipe, a head gate structure molded in concrete about the end of said pipe and secured to the same and formed with diagonal lateral flanges each having a groove and an angular shoulder, and a metallic gate movable in said vertical grooves.

5. In a structure of the character described, a pipe, a head gate structure formed of concrete in one piece, and having a collar secured to said ,pipe and lateral flanges and grooves, the lower ends of said grooves being cut away and a metallic gate movable in said grooves, and having its lower corners cutaway.

6. In a structure of the character described, a pipe, a head gate structure in one piece of concrete with a eollar secured to said pipe, springs mounted in the walls of said head gate structure and a metallic gate slidable in said grooves and bearing against said springs.

7. In a structure of the character described, a gate structure formed of concrete.

in one piece and having a collar with a rear annular groove, gate grooves, and flanges.

8. The method of forming a head gate structure for irrigating purposes which consists in securing to a pipe with a beveled edge at one end, a collar of concrete molded in one piece about a metallic gate located in front of the end of said pipe, cementing said collar to said pipe, moving said gate up and down in said collar to form vertical grooves and molding said gate structure to form annular shoulders, and lateral flanges.

. 9. The method of forming a head gate structure for irrigating purposes, consisting in providing a pipe with a beveled edge at one end, placing a metallic sheet iron plate against the end of said pipe, molding. about the end of said pipe and about said plate a gate structure in one piece of concrete and fOl'D'tQd' with a collar having arear shouldered groove filled with concrete between it and the end of the pipe and the plate, moving said plate up and down in said collar to formgrooves and said collar being formed with lateral flanges and annular shoulders.

In testimony whereof I hereunto aflix my signature in presence of two witnesses.

. PERRY L. .HEDRICK. Vitnesscs \V. J. SEAT, G; O. MOLEOD.- 

